package com.ccmusic.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet Filter implementation class UserLoginFilter
 */
//@WebFilter(value={"/user","/MusicServelt","/ms.do","/CommentsServlet","/ManagerSys/musicManagement.jsp","/ManagerSys/commentsManagement.jsp","/ManagerSys/userManagement.jsp"})
public class UserLoginFilter implements Filter {

    /**
     * Default constructor. 
     */
    public UserLoginFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req=(HttpServletRequest)request;
		HttpServletResponse res=(HttpServletResponse)response;
		if(req.getSession().getAttribute("user")!=null || "login".equals(req.getParameter("op")) || "check".equals(req.getParameter("op"))) {
			chain.doFilter(req, res);
			
		}else {
			res.sendRedirect("HTlogin.jsp");
		}
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
